body {
    margin: 0;
    overflow: hidden;
    animation: dynamics 6s ease infinite;
    -webkit-animation: dynamics 6s ease infinite;
    -moz-animation: dynamics 6s ease infinite;
    font-size: 14px;
    color: #ffffff;
    min-height: 700px;
    padding: 0;
}
/*登录样式*/
.main {
    position: fixed;
    text-align: center;
    top: 170px;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
}
.login {
    width: 470px;
    height:470px;
    opacity: 0.9;
    animation: dynamics 6s ease infinite;
    -webkit-animation: dynamics 6s ease infinite;
    -moz-animation: dynamics 6s ease infinite;
    background-size:1400% 300%;
}
@keyframes dynamics {
    0% {
        background-position: 0 0;
    }
    50% {
        background-position: 50% 100%;
    }
    100% {
        background-position: 100% 0;
    }
}
.log-con {
    background-repeat: no-repeat;
    background-size: 3px 20px, 20px 3px;
    height: 100%;
    margin: -2px;
    padding: 3px 1px 1px 0;
    border-radius: 3px;
}
.log-con >span::after {
    display: block;
    content: '';
    width: 57px;
    height: 3px;
    background: #ffffff;
    margin-top: 16px;
    justify-content: center;
    position: relative;
    left: 206px;
}
.log-con>input {
    display: block;
    margin: 10px 0 32px 70px;
    width: 330px;
    height: 42px;
    background-color: #ffffff;
    border-radius: 4px;
    opacity: 0.9;
    border: 0;
    font-size: 16px;
    outline: none;
    padding-left: 10px;
    color: #000000;
}

input::-webkit-input-placeholder {
    color: #000000;
    font-size: 16px;
}
/*logo*/
.logo {
    width: 168px;
    height: 75px;
    position: fixed;
    left: 150px;
    top: 26px;
}
.logo>img {
    max-width: 100%;
    max-height: 100%;
}
/*版权样式*/
.copyright {
    position: fixed;
    bottom: 10px;
    font-size: 16px;
    display: block;
    width: 100%;
    text-align: center;
}
.but,a {
    outline: none;
    width: 50px;
    height: 30px;
    border: 0;
    padding: 5px 7px;
    background: #fff;
    border-radius: 20px;
    margin: 10px 10px;
}
a{
    text-decoration: none;
    margin-left: 100px;
}